Re: [Geary] Connection issues (IPv6 and DNS servers) and Geary sync speed

[Michael Gratton <mike vee net>]

On Thu, 12 Sep, 2019 at 11:14, Federico Bruni <fede inventati org> 
wrote:
> I've recently noticed a flaky connection while using a streaming 
> service.
> I could not find any useful information in the logs, but I saw some 
> reports about IPv6 issues with some routers so I decided to disable 
> it. I've also added more than one DNS servers, to be safe.
>
> Since then I've never had any issue with the streaming service.
> And Geary sync seems to be faster and reliable than before, both on 
> my laptop and desktop installations (which have different network 
> setups).

Yeah, unfortunately broken IPv6 connections can still be a bit of a 
pain. GLib 2.58 and 2.60 saw a good amount of work done to make IPv6 
fallback work better by implementing the Happy Eyeballs approach[0], 
but clearly things can still get wedged.

If you are suffering some problems using IPv6 that goes away when IPv6 
is disabled and comes back when it is re-enabled when using Geary or 
other GIO-based software like Web, it would be worth reporting that in 
the GLib bug tracker so the underlying issue can be tracked down.

> One issue that it's still present: sometimes a new conversation with 
> more than one message fails to load the second and following 
> messages. The sync keeps running forever until I close Geary and 
> restart it. This is annoying since I also lose some (not all) of 
> previous delete/archive actions, which I have to repeat.

This has been an ongoing issue with 0.13 and 3.32. I think you're 
thinking about issue #212[1]? This cycle saw a fair bit of work in 
addressing the underlying problem, and I think it might now be fixed, 
so let me know how it goes with 3.34.

//Mike

[0] - <https://en.wikipedia.org/wiki/Happy_Eyeballs>
[1] - <https://gitlab.gnome.org/GNOME/geary/issues/215>

--
⊨ Michael Gratton, Percept Wrangler.
⚙ <http://mjog.vee.net/>